Some published estimates have placed their top speed at 30 to 33 knots (56 to 61 km/h 35 to 38 mph). Department of Defense, the top speed of the submarines of the Los Angeles class is over 25 knots (46 km/h 29 mph), although the actual maximum is classified. Capabilities Crewmen monitor consoles at the diving station aboard a Los Angeles-class submarineĪccording to the U.S. A further four boats were proposed by the Navy, but later cancelled. The diving planes are placed at the bow rather than on the sail, and are retractable. These boats are quieter, with more advanced electronics, sensors, and noise-reduction technology. The last 23 had a significant upgrade with the 688i improvement program. The following eight that made up the second "flight" of subs had 12 new vertical launch tubes that could fire Tomahawk missiles. In 1982, after building 31 boats, the class underwent a minor redesign. "688i" (for Improved): Quieter, advanced BSY-1 sonar suite, the ability to lay mines and configured for under-ice operations.ĭesign Flights Flight II 688 VLS. Los Angeles-class submarines were built in three successive flights: Flightġ2 vertical launch tubes for Tomahawk cruise missiles and an upgraded reactor core. This lead General Dynamics to file a $100 million insurance claim to cover the costs of re-inspections of the yard's work, "thus, Electric Boat was asking the Navy to reimburse it for its own mis-management." The parties reached an agreement in 1981 whereby GDEB was awarded a firm contract for an additional 688-class boat and two options the Navy needed GDEB's shipbuilding capacity to achieve its procurement goals. The USN and General Dynamics had a further dispute in 1979–1980 when it was discovered that nonconforming steel had been used in the construction of the submarines and thousands of welds were found to be either defective or missing. The USN and General Dynamics reached an $843 million settlement agreement in June 1978 the contract price was increased by $125 million, GDEB absorbed a $359 million loss, and the USN paid an additional $359 million under the authority of Public Law 85-804. On 1 December 1976 General Dynamics Electric Boat (GDEB) submitted a $544 million claim related to its contract for 18 Los-Angeles-class submarines the contractor alleged the USN made an undue amount of design changes while the government argued that Electric Boat mismanaged its operations. The class originally had essentially the same weapons and sensors as the preceding Sturgeon-class submarine, but was approximately 50% larger with "major improvements" in stealth and speed so that they too could keep up with carrier battle groups. Development of the Los Angeles class commenced in 1967 as a response. Soviet fast-attack submarines became capable of keeping pace with carrier groups, while their newer missile submarines could potentially overwhelm the group's defenses with salvos of missiles. In the late 1960s, the Soviet Union's advances in submarine technology increasingly threatened the survivability of US Navy (USN) carrier battle groups. Rickover's response to the decision to name the submarines after cities (and occasionally politicians influential in defense issues) was that "Fish don't vote." Development Rickover, named for the " father of the nuclear Navy." This was a change from traditionally naming attack submarines after marine animals, such as USS Seawolf or USS Shark. Submarines of this class are named after American towns and cities, such as Albany, New York Los Angeles, California and Tucson, Arizona, with the exception of USS Hyman G. As of 2022, 26 of the Los Angeles class remain in commission-more than any other class in the world-and they account for more than half of the U.S. Also known as the 688 class (pronounced "six-eighty-eight") after the hull number of lead vessel USS Los Angeles (SSN-688), 62 were built from 1972 to 1996, the latter 23 to an improved 688i standard. The Los Angeles class of submarines are nuclear-powered fast attack submarines ( SSN) in service with the United States Navy.
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